清单4中的每个等级方案的等级域标识符是。
The ranking domain identifiers for each of the ranking schemes in Listing 4 are.
给他们指定进程ID或者数字标识符为的是让操作系统跟踪正在执行的程序和这些程序的相关联的优先等级。
They are assigned a process id or a numerical identifier so that the operating system may keep track of the programs currently executing and of their associated priority levels.
他表示，观测站的预警标识在戈马城到处都有，这些标识会显示喷发的风险等级，绿色代表低危险性，红色则代表喷发即将来临。
Warning flags at stations throughout town, he said, announce the risk level of an eruption, from green, indicating low danger, to red, meaning an eruption is imminent.
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